{"id":63850,"date":"2025-08-10T00:37:32","date_gmt":"2025-08-10T00:37:32","guid":{"rendered":""},"modified":"2025-09-04T23:56:05","modified_gmt":"2025-09-05T05:56:05","slug":"cve-2025-46093-critical-vulnerability-in-liquidfiles-allowing-root-access-via-ftp-site-chmod","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-46093-critical-vulnerability-in-liquidfiles-allowing-root-access-via-ftp-site-chmod\/","title":{"rendered":"CVE-2025-46093: Critical Vulnerability in LiquidFiles Allowing Root Access via FTP SITE CHMOD<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

In this post, we will explore the details of a critical security vulnerability, known as CVE-2025-46093, that affects versions of LiquidFiles prior to 4.1.2. This vulnerability enables FTPDrop users to gain root-level access and execute arbitrary code on affected systems by leveraging the Actionscript feature and sudoers configuration. Given the severity and potential ramifications, understanding this vulnerability is critical<\/a> for IT security professionals, system administrators, and developers who work with or support LiquidFiles systems.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-46093
\nSeverity: Critical (CVSS 9.9)
\nAttack Vector: Network
\nPrivileges Required: Low
\nUser Interaction: Required
\nImpact: Potential system compromise or data leakage<\/a><\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

LiquidFiles | Before 4.1.2<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability stems from LiquidFiles’ support for FTP SITE<\/a> CHMOD for mode 6777 (setuid and setgid). This allows FTPDrop users to manipulate file permissions, ultimately enabling them to execute arbitrary code<\/a> as root. They achieve this by exploiting the Actionscript feature and the sudoers configuration. Given the power associated with root-level access, successful exploitation of this vulnerability could lead<\/a> to full system compromise, including unauthorized data access, data modification, or service disruption.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here’s a conceptual example of how an attacker might exploit this vulnerability:<\/p>\n

# Log in to the FTP server\nftp target.example.com\n# Change to the directory containing the file to exploit\ncd \/path\/to\/target\/directory\n# Change the mode of the file to 6777 using SITE CHMOD\nSITE CHMOD 6777 targetfile\n# Execute the script as root\necho \"os.execute('sh')\" > exploit.as && gcc -o exploit exploit.as\n# Use sudo to run the exploit script\nsudo .\/exploit<\/code><\/pre>\n
This example demonstrates how an attacker could use FTP SITE CHMOD to change file permissions, compile an exploit script, and then execute this script<\/a> as root. This is just a conceptual demonstration; the actual exploitation would involve more complex and specific steps depending on the exact system configuration and the attacker’s objectives<\/a>.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To remediate this vulnerability, users are advised to update their LiquidFiles software to version 4.1.2 or later, which contains a patch for this security issue. If immediate patching is not feasible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. However, these measures only provide a stopgap solution and do not fully resolve the vulnerability<\/a>. As such, patching should be carried out as soon as possible to fully protect systems from potential<\/a> exploitation.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview In this post, we will explore the details of a critical security vulnerability, known as CVE-2025-46093, that affects versions of LiquidFiles prior to 4.1.2. This vulnerability enables FTPDrop users to gain root-level access and execute arbitrary code on affected systems by leveraging the Actionscript feature and sudoers configuration. Given the severity and potential ramifications, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-63850","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t